Balancing engine or motor.



No. 660.679. Patented Oct. 30,1900.

6. L. V.'CHAUVEAU.

BALANCING ENGINE 0R MOTOR.

(Application filed Juno 5, 1900.)

(No Model.)

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UNTTED STATES PATENT OFFICE...

GUSTAVE LEON VICTOR CHAUVEAU, OF PARIS, FRANCE.

BALANCING ENGINE OR MOTOR.

SPECIFICATION forming part of Letters Patent N 0. 660,679, dated October 30, 1900-.

Application filed June 5,1900. Serial No- 19,l25. (No model.)

To all whom it may concern:

Be it known that I, GUSTAVE LEON VICTOR CHAUVEAU, engineer, a citizen of the French Republic, residing at 29 Rue des Belles-Fenilles, Paris, France, have invented a new and useful Improvement in Balancing Engines or Motors, of which the following is a specification.

\Vith the object of obtaining a balanced motor or engine in which the to-and-fro motion of a piston is converted into a rotary motion and in order to avoid the vibration which is particularly inconvenient in the case of explosion-engines when applied to autocars it has been proposed to mount two connecting-rods upon one and the same piston, each actuating a driving-shaft, the two driving-shafts being arranged in the same line and rotating in the reverse direction to one another in such a manner that two movements of equal power are obtained,whieh balance one another. The complete overcoming of the dead-points when two independent connecting-rods are made use of being, however, practically impossible, the two rods had to be coupled together in order to insure satisfactory working; but the means hitherto proposed for this purpose involved the use of levers, beveled gear, &c. All these means were, however, of an inconvenient nature on account of the complication and delicacy of the required construction. By the presentinvention I avoid these disadvantages by making use of ordinary gearing and of a counter-shaft arranged parallel to the driving-shafts. Such an arrangement allows of the counter-shaft rotating at a higher or lower speed or even at the same speed. For this reason the countershaft may be used for regulating the distribution in the case of an explosive-engine or the like, which has not been possible with the means formerly proposed.

In the acompanying drawings I have shown in Figures 1, 2, and 3 myinvention as applied to a single-cylinder engine, Fig. 1 being a sectional front elevation; Fig. 2, a sectional side view, and Fig. 3 a sectional plan View. Fig. 4 is a sectional plan view of a modified form of a two-cylinder engine.

A, Figs. 1, 2, and 3, designates a cylinder in which moves a piston B, provided with a journal or spindle C, on which pivot the exactly-similar connecting-rods D D, operating two driving-shafts E E by means of crankarnis, which are equal. The two shafts carry each a fly-wheel H H, each provided with a weight I, counter-balancing half the piston, a connecting-rod, and a crank-arm. The two flywheels are similar, and the balanceweights areplaced at the ends of the diameter opposite to the wrist-pin.

K and K are two pinions operating two toothed wheels L L, which are similar, the operation of the former pinion being direct and that of the latter pinion taking place through the medium of a pinion M. The two wheels L L are fixedly attached to the,

shaft N.

It will be readily understood that the toand-fro movement of the piston is transmitted to the two driving-shafts E E, which, being connected by the gears K K L L M, revolve in opposite directions and at the same speed. This arrangement may be applied to any type of reciprocating engine, driven either by a fluid under pressure or by an explosive mixture or even when it is a doubleacting engine, the connecting-rods in that case being no longer pivoted directly to the piston but to the rod of the latter or to intermediate parts connected to the said rod when necessary.

The fly-wheels need not be of the same form and dimensions, provided that their couples of rotation are the same. They may also be replaced by devices serving both as a flywheel and for the transmission of power for operating the distribution of the same either indirectly or directly, as maybe desired. The whole or a part of the power may be taken from an intermediate shaft N.

The driving-shafts may be combined in some other way than that shown, be supported at more than one point, and be pro vided with crank-plates or disks serving as a fly-wheel, 85c. Thus the cranks may be replaced by crank-shafts revolving on a central bearing between the other two, Fig. 4.

The intermediate shaft N may revolve at any speed. In explosion-motors of the fourstroke cycle type itis desirable that it should rotate at half the speed of the driving-shafts in such a manner as to allow of making use of it also for regulating the distribution, for

igniting, and other purposes. If the engine is of the two-stroke type, the counter-shaft Serves the same purpose; but in that case it must of course be arranged so as to rotate at the same speed as the driving-shafts.

The relation as regards the direction or the speed of the motion of the driving-shafts and that of the counter-shaft may be used for the alteration of speed or the direction, for example, in autocars.

In place of a single cylinder A a series of cylinders may be employed, arranged in a circle around the driving-shafts, all their pis tons being connected together by connectingrods at each crank.

The two-crank-shafts arrangement shown in Fig. 4 may also be employed, each crankshaft corresponding in this case to a cylinder and being operated by a single connectingrod, the two shafts revolving in opposite directions, and the pistons then moving in the parallel cylinders and communicating at the top only comprising a single group of distributing devices, the cycle being the same kind in both the cylinders, so that they may be considered as forming one and the same cylinder. This improved arrangement may also be applied to all motors having four, six, or eight cylinders in groups ofpairs.

I claim 1. The combination with two driving-shafts journaled in alinement, means to rotate said shafts in opposite directions at the same speed, a counter-shaft, and gearing interposedvbetween the driving-shafts and the counter-shaft to transmit the movement of the former to the latter to cause its rotation, substantially as set forth. I v

2. The combination with two driving-shafts .journaled in alinement, piston-rods connected to said shafts to rotate them in opposite directions, a counter-shaft, spaced gears fast on the counter-shaft, a pinion on each drivthe former to the latter to cause its rotation,

and fly-wheels of equal couples on the driv ing-shafts, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GUSTAVE LEON VICTOR CHAUVEAU.

Witnesses:

CLAUDIUS LUSSON, EDWARD PQMACLEAN. 

